WASHINGTON – Most frequent travelers know what they can and cannot bring onto an airplane. But sometimes the holidays require you pack odd things, such as gifts, that might cause a problem at security.

The Transportation Security Administration is ready for the holidays and the litany of random items that land on the security belt this time of year.

Snow globes are OK, as long as they are smaller than a tennis ball. Passengers also are free to bring a pie on board, says David Keister, a veteran TSA officer.

“Pies and cakes are more than welcome. You can carry those items right on through the checkpoint,” Keister says.

But if it’s liquid, gel or goopy and more than 3-ounces, it can’t come on the plane, Keister says. That means regular sized toiletries of course, but the rule also applies to any cheese spreads or cranberry sauce you might want to share at the Thanksgiving table.